matlab里if条件句if pi*2/3>H(i,j)>0 R(i,j)=I(i,j)*(1+S(i,j)*cos(H(i,j))/(cos(pi*1/3-H(i,j))); B(i,j)=I(i,j)*(1-S(i,j)); G(i,j)=3*I(i,j)-(B(i,j)+R(i,j));程序能运行,但这样用合理吗?QQ...